"Every piano has one".gbmc wrote:Every piano has one. It is the backbone to structural integrity. It’s also what gives a piano most of its weight. What is it? Commonly called the frame, harp or plate, this iron mass in the piano withstands the 19+ tons of string tension. Read this month's blog on how they cast iron frames for pianos. http://pianopricepoint.com/casting-iron-piano-frames/
Umm....with the exception of wooden-frame pianos.